{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["protein", "DNA", "cell line", "RNA", "cell type"], "input": "OBJECTIVE: The authors' objective was to investigate the possibility that glucocorticoid receptor changes may be involved in the dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis in posttraumatic stress disorder ( PTSD )."}
{"protein": ["glucocorticoid receptor"], "DNA": [], "cell line": [], "RNA": [], "cell type": []}